Oramos Cantando / We Pray in Song
Bilingual Catholic Hymnal - English & Spanish
from GIA

I got a copy yesterday (Thanks, Fr. Ron Krisman!).

I have not had time to do a thorough analysis, but here's a few first impressions.

Overall, the word that occurs to me is: COMPREHENSIVE

SPANISH-ENGLISH
This hymnal is, essentially, a mainstream English-language Catholic hymnal + a mainstream Spanish-language Catholic hymnal, smashed together with everything translated. So you could sing "Come Holy Ghost" in English, Spanish, or both; you could sing "Mañanitas a la Virgen de Guadalupe" in Spanish, English, or both.
Most (not all, but most) selections have complete translations (as opposed to a verse or two). A few (pieces specififcally written that way) have macaronic verses or refrains (switching back and forth between Eng. and Sp.), but mostly the two languages are stacked on top of each other (like additional verses in a hymn) or, occasionally, side-by-side.

The other exception to everything being English/Spanish is a handful of Latin-only (or, in the case of the Kyrie, Greek-only) chants. For example 709 is the traditional Mode I Ave Maria chant in Latin. (Fa Do Re Re-La-Te La). Not all Latin chants are left untranslated, though. Regina Caeli (444) and Ubi Caritas (585) are both presented in their entirety in Latin, English, and Spanish. (Just for example - there are others).

I cannot speak to the quality of the translations, because I do not speak/read Spanish with more than a cursory "I think it's saying X" level of competence. The couple places I "spot-checked" didn't jump out at me as, for example, having different content. The literary quality will need to be judged by someone else.

CHANT
This is not a "Chant Hymnal." However, given the (as I understand) lack of vernacular Spanish translations of Gregorian chant currently, the forward movement in this regard is excellent.

The "Order of Mass" section has most of the ICEL chants (a few items are presented in text-only, which is a regrettable but probably very practical decision), with interlinear or side-by-side Spanish versions of the same. I hope these will be used.

There's also an ENTIRE Mass setting in Latin-only chant. (Setting Eight: Cantus Missae). The major pieces of it come from the Missa De Angelis, with dialogues from the Missale Romanum and additional material (Credo, Pater Noster, an additional Sanctus, etc.) from other well-known/accessible settings.

I would have wanted an additional one or two tri-lingual chant settings of the Ordinary (instead of, some of the pop-folk settings included), but they probably would not be used by most congregations.

USEFULNESS
Personally - I think it would be very useful. The parish I grew up in (50/50 or so English-Spanish) would have been much better off with this hymnal than with the Pastiche of OCP throwaways, home-made bulletins, and words-only Spanish editions that were there back in the 90s.

But I do worry that the paradigm being presented here (unified English-Spanish worship, with lots of musical cross-fertilization) isn't the reality in most bilingual parishes. GIA is attempting, with this hymnal, to change bilingual parish culture (at least, as I've known it). I hope they are successful.

THE BAD
Okay- I have to say a couple things.

1. If you don't agree with the philosophy/praxis/whatever that guides GIA's production of English-language hymnals, you won't like this one any more or less. It has the same questionable adaptations of the Liturgy of the Hours, the same liberal-bias commentary in the introduction to Mass, the same mix of pop/folk/ethnic songs and hymns. It is a bilingual version of one of their mainstream hymnals. That's either good or bad depending on your view point, but it's a point related to GIA generally, not this hymnal in particular.

2. The orange cover is awful. I cannot fathom how this happened. I'm serious- that was the first thing my wife and I both said when I pulled it out of the mailing package. GIA: For future reference- don't do that. (And the kerning is off on the English title.)